Well, earlier this year, I got a homestay visa to return back to Russia. I am a US citizen. My sponsor is my wife, who has dual citizenship between Russia and the USA.
The last half dozen, or maybe dozen, don't know and lost count, times I've been to Russia my wife registered me to stay in her flat. Well, there was one business trip where I was in her home town and she was in the States, but you get the idea.